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block/vmdk: Add blkdebug events 

This is certainly not complete, but it includes at least write_aio and
read_aio.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-id: 20171123020832.8165-5-mreitz@redhat.com
Reviewed-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
Max Reitz 2017-11-23 03:08:19 +01:00
parent 0abb1475f8
commit 23c4b2a896
1 changed files with 16 additions and 0 deletions
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16
block/vmdk.c
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@ -1075,6 +1075,8 @@ static int get_whole_cluster(BlockDriverState *bs,
/* Read backing data before skip range */
if (skip_start_bytes > 0) {
if (bs->backing) {
/* qcow2 emits this on bs->file instead of bs->backing */
BLKDBG_EVENT(extent->file, BLKDBG_COW_READ);
ret = bdrv_pread(bs->backing, offset, whole_grain,
skip_start_bytes);
if (ret < 0) {
@ -1082,6 +1084,7 @@ static int get_whole_cluster(BlockDriverState *bs,
goto exit;
}
}
BLKDBG_EVENT(extent->file, BLKDBG_COW_WRITE);
ret = bdrv_pwrite(extent->file, cluster_offset, whole_grain,
skip_start_bytes);
if (ret < 0) {
@ -1092,6 +1095,8 @@ static int get_whole_cluster(BlockDriverState *bs,
/* Read backing data after skip range */
if (skip_end_bytes < cluster_bytes) {
if (bs->backing) {
/* qcow2 emits this on bs->file instead of bs->backing */
BLKDBG_EVENT(extent->file, BLKDBG_COW_READ);
ret = bdrv_pread(bs->backing, offset + skip_end_bytes,
whole_grain + skip_end_bytes,
cluster_bytes - skip_end_bytes);
@ -1100,6 +1105,7 @@ static int get_whole_cluster(BlockDriverState *bs,
goto exit;
}
}
BLKDBG_EVENT(extent->file, BLKDBG_COW_WRITE);
ret = bdrv_pwrite(extent->file, cluster_offset + skip_end_bytes,
whole_grain + skip_end_bytes,
cluster_bytes - skip_end_bytes);
@ -1120,6 +1126,7 @@ static int vmdk_L2update(VmdkExtent *extent, VmdkMetaData *m_data,
{
offset = cpu_to_le32(offset);
/* update L2 table */
BLKDBG_EVENT(extent->file, BLKDBG_L2_UPDATE);
if (bdrv_pwrite_sync(extent->file,
((int64_t)m_data->l2_offset * 512)
+ (m_data->l2_index * sizeof(offset)),
@ -1218,6 +1225,7 @@ static int get_cluster_offset(BlockDriverState *bs,
}
}
l2_table = extent->l2_cache + (min_index * extent->l2_size);
BLKDBG_EVENT(extent->file, BLKDBG_L2_LOAD);
if (bdrv_pread(extent->file,
(int64_t)l2_offset * 512,
l2_table,
@ -1393,9 +1401,13 @@ static int vmdk_write_extent(VmdkExtent *extent, int64_t cluster_offset,
.iov_len = n_bytes,
};
qemu_iovec_init_external(&local_qiov, &iov, 1);
BLKDBG_EVENT(extent->file, BLKDBG_WRITE_COMPRESSED);
} else {
qemu_iovec_init(&local_qiov, qiov->niov);
qemu_iovec_concat(&local_qiov, qiov, qiov_offset, n_bytes);
BLKDBG_EVENT(extent->file, BLKDBG_WRITE_AIO);
}
write_offset = cluster_offset + offset_in_cluster;
@ -1437,6 +1449,7 @@ static int vmdk_read_extent(VmdkExtent *extent, int64_t cluster_offset,
if (!extent->compressed) {
BLKDBG_EVENT(extent->file, BLKDBG_READ_AIO);
ret = bdrv_co_preadv(extent->file,
cluster_offset + offset_in_cluster, bytes,
qiov, 0);
@ -1450,6 +1463,7 @@ static int vmdk_read_extent(VmdkExtent *extent, int64_t cluster_offset,
buf_bytes = cluster_bytes * 2;
cluster_buf = g_malloc(buf_bytes);
uncomp_buf = g_malloc(cluster_bytes);
BLKDBG_EVENT(extent->file, BLKDBG_READ_COMPRESSED);
ret = bdrv_pread(extent->file,
cluster_offset,
cluster_buf, buf_bytes);
@ -1527,6 +1541,8 @@ vmdk_co_preadv(BlockDriverState *bs, uint64_t offset, uint64_t bytes,
qemu_iovec_reset(&local_qiov);
qemu_iovec_concat(&local_qiov, qiov, bytes_done, n_bytes);
/* qcow2 emits this on bs->file instead of bs->backing */
BLKDBG_EVENT(bs->file, BLKDBG_READ_BACKING_AIO);
ret = bdrv_co_preadv(bs->backing, offset, n_bytes,
&local_qiov, 0);
if (ret < 0) {